Part Number : AD679TD
Function : 14-bit 128 kSPS complete sampling ADC
Manufacturers : Analog Devices
The AD679 is a complete, multipurpose 14-bit monolithic analog-to-digital converter, consisting of a sample-and-hold amplifier (SHA), a microprocessor-compatible bus interface, a voltage reference, and clock generation circuitry.
The AD679 is specified for ac (or dynamic) parameters such as S/N+D ratio, THD, and IMD, which are important in signal processing applications. In addition, the AD679K, B, and T
grades are fully specified for dc parameters that are important in measurement applications.
The 14 data bits are accessed in two read operations (8 + 6), with left justification. Data format is straight binary for unipolar mode and twos complement binary for bipolar mode. The input has a full-scale range of 10 V with a full power bandwidth of 1 MHz and a full linear bandwidth of 500 kHz. High input impedance (10 MΩ) allows direct connection to unbuffered
sources without signal degradation. Conversions can be initiated either under microprocessor control or by an external clock asynchronous to the system clock.
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